Prepare all the ingredients.
Brush the backs with Dijon mustard.
Put in a terracotta dish.
Put them side by side.
Put in the preheated oven at 210°C (410°F).
Meanwhile, melt the butter in a small pot. Season with salt...
...and pepper.
When the butter is melted and hot..
Pour on the rabbit in the oven.
Add rosemary and put back in the oven.
Baste frequently with the seasoned butter. Cook for 40 to 45 minutes.
Moments before the end of the cooking, warm up the brandy in a small pot. When boiling, ignite it with a match (watch out the flame).
Pour the burning brandy over the cooked rabbit when you take it out of the oven. Serve immediately.